java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:11:05,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:11:05,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:11:05,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:11:05,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:11:05,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:11:05,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:11:05,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:11:05,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:11:05,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:11:05,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:11:05,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:11:05,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:11:05,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:11:05,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:11:05,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:11:05,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:11:06,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:11:06,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:11:06,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:11:06,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:11:06,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:11:06,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:11:06,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:11:06,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:11:06,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:11:06,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:11:06,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:11:06,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:11:06,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:11:06,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:11:06,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:11:06,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:11:06,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:11:06,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:11:06,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:11:06,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:11:06,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:11:06,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:11:06,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:11:06,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:11:06,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:11:06,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:11:06,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:11:06,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:11:06,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:11:06,056 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:11:06,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:11:06,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:11:06,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:11:06,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:11:06,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:11:06,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:11:06,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:11:06,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:11:06,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:11:06,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:11:06,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:11:06,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:11:06,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:11:06,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:11:06,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:11:06,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:11:06,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:11:06,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:11:06,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:11:06,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:11:06,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:11:06,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:11:06,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:11:06,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:11:06,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:11:06,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:11:06,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:11:06,376 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:11:06,376 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:11:06,377 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2019-10-13 23:11:06,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d916dd87d/06b50609c3ff4454aa4bb82672a9eed8/FLAG261b24ffa [2019-10-13 23:11:07,092 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:11:07,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2019-10-13 23:11:07,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d916dd87d/06b50609c3ff4454aa4bb82672a9eed8/FLAG261b24ffa [2019-10-13 23:11:07,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d916dd87d/06b50609c3ff4454aa4bb82672a9eed8 [2019-10-13 23:11:07,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:11:07,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:11:07,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:11:07,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:11:07,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:11:07,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:11:07" (1/1) ... [2019-10-13 23:11:07,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52145332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:07, skipping insertion in model container [2019-10-13 23:11:07,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:11:07" (1/1) ... [2019-10-13 23:11:07,346 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:11:07,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:11:08,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:11:08,126 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:11:08,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:11:08,340 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:11:08,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08 WrapperNode [2019-10-13 23:11:08,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:11:08,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:11:08,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:11:08,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:11:08,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... [2019-10-13 23:11:08,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:11:08,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:11:08,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:11:08,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:11:08,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:11:08,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:11:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:11:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:11:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:11:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:11:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:11:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:11:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:11:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:11:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:11:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:11:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:11:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:11:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:11:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:11:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:11:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:11:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:11:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:11:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:11:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:11:08,615 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:11:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:11:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:11:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:11:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:11:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:11:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:11:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:11:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:11:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:11:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:11:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:11:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:11:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:11:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:11:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:11:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:11:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:11:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:11:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:11:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:11:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:11:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:11:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:11:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:11:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:11:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:11:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:11:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:11:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:11:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:11:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:11:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:11:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:11:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:11:08,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:11:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:11:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:11:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:11:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:11:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:11:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:11:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 23:11:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:11:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:11:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:11:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:11:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:11:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:11:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:11:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:11:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:11:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:11:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:11:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:11:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:11:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:11:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:11:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:11:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:11:08,642 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:11:08,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:11:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:11:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:11:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:11:08,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:11:08,648 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:11:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:11:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:11:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 23:11:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 23:11:08,649 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:11:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:11:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:11:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:11:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:11:08,650 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:11:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:11:13,525 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:11:13,526 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:11:13,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:11:13 BoogieIcfgContainer [2019-10-13 23:11:13,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:11:13,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:11:13,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:11:13,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:11:13,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:11:07" (1/3) ... [2019-10-13 23:11:13,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:11:13, skipping insertion in model container [2019-10-13 23:11:13,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:08" (2/3) ... [2019-10-13 23:11:13,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:11:13, skipping insertion in model container [2019-10-13 23:11:13,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:11:13" (3/3) ... [2019-10-13 23:11:13,538 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2019-10-13 23:11:13,548 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:11:13,607 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:11:13,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:11:13,647 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:11:13,647 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:11:13,648 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:11:13,648 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:11:13,648 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:11:13,648 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:11:13,648 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:11:13,648 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:11:13,676 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2019-10-13 23:11:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:11:13,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:13,698 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:13,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:13,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1316040311, now seen corresponding path program 1 times [2019-10-13 23:11:13,715 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:13,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791487578] [2019-10-13 23:11:13,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:13,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:13,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:14,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791487578] [2019-10-13 23:11:14,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:14,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:11:14,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228588022] [2019-10-13 23:11:14,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:11:14,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:11:14,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:11:14,361 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 2 states. [2019-10-13 23:11:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:14,428 INFO L93 Difference]: Finished difference Result 518 states and 614 transitions. [2019-10-13 23:11:14,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:11:14,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 136 [2019-10-13 23:11:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:14,452 INFO L225 Difference]: With dead ends: 518 [2019-10-13 23:11:14,453 INFO L226 Difference]: Without dead ends: 334 [2019-10-13 23:11:14,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:11:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-10-13 23:11:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2019-10-13 23:11:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2019-10-13 23:11:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 395 transitions. [2019-10-13 23:11:14,576 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 395 transitions. Word has length 136 [2019-10-13 23:11:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:14,578 INFO L462 AbstractCegarLoop]: Abstraction has 334 states and 395 transitions. [2019-10-13 23:11:14,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:11:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 395 transitions. [2019-10-13 23:11:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 23:11:14,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:14,584 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:14,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1761776534, now seen corresponding path program 1 times [2019-10-13 23:11:14,585 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:14,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84519222] [2019-10-13 23:11:14,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:14,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:14,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:14,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84519222] [2019-10-13 23:11:14,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:14,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:14,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221872796] [2019-10-13 23:11:14,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:14,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:14,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:14,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:14,816 INFO L87 Difference]: Start difference. First operand 334 states and 395 transitions. Second operand 3 states. [2019-10-13 23:11:14,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:14,861 INFO L93 Difference]: Finished difference Result 503 states and 585 transitions. [2019-10-13 23:11:14,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:14,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-13 23:11:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:14,875 INFO L225 Difference]: With dead ends: 503 [2019-10-13 23:11:14,875 INFO L226 Difference]: Without dead ends: 336 [2019-10-13 23:11:14,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-10-13 23:11:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2019-10-13 23:11:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-10-13 23:11:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 397 transitions. [2019-10-13 23:11:14,915 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 397 transitions. Word has length 137 [2019-10-13 23:11:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:14,919 INFO L462 AbstractCegarLoop]: Abstraction has 336 states and 397 transitions. [2019-10-13 23:11:14,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 397 transitions. [2019-10-13 23:11:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:11:14,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:14,925 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:14,926 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash -853202184, now seen corresponding path program 1 times [2019-10-13 23:11:14,928 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:14,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236920744] [2019-10-13 23:11:14,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:14,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:14,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:15,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236920744] [2019-10-13 23:11:15,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:15,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:15,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522695395] [2019-10-13 23:11:15,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:15,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:15,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:15,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:15,207 INFO L87 Difference]: Start difference. First operand 336 states and 397 transitions. Second operand 3 states. [2019-10-13 23:11:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:15,267 INFO L93 Difference]: Finished difference Result 654 states and 801 transitions. [2019-10-13 23:11:15,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:15,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-10-13 23:11:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:15,272 INFO L225 Difference]: With dead ends: 654 [2019-10-13 23:11:15,272 INFO L226 Difference]: Without dead ends: 376 [2019-10-13 23:11:15,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-10-13 23:11:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 375. [2019-10-13 23:11:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2019-10-13 23:11:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 465 transitions. [2019-10-13 23:11:15,297 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 465 transitions. Word has length 142 [2019-10-13 23:11:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:15,298 INFO L462 AbstractCegarLoop]: Abstraction has 375 states and 465 transitions. [2019-10-13 23:11:15,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 465 transitions. [2019-10-13 23:11:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 23:11:15,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:15,302 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:15,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1581148376, now seen corresponding path program 1 times [2019-10-13 23:11:15,303 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:15,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320060287] [2019-10-13 23:11:15,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:15,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:15,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:11:16,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320060287] [2019-10-13 23:11:16,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:16,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2019-10-13 23:11:16,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165530076] [2019-10-13 23:11:16,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:11:16,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:11:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:11:16,071 INFO L87 Difference]: Start difference. First operand 375 states and 465 transitions. Second operand 22 states. [2019-10-13 23:11:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:23,766 INFO L93 Difference]: Finished difference Result 940 states and 1116 transitions. [2019-10-13 23:11:23,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 23:11:23,769 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 143 [2019-10-13 23:11:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:23,774 INFO L225 Difference]: With dead ends: 940 [2019-10-13 23:11:23,775 INFO L226 Difference]: Without dead ends: 696 [2019-10-13 23:11:23,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 23:11:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-13 23:11:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 687. [2019-10-13 23:11:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2019-10-13 23:11:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2019-10-13 23:11:23,821 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 143 [2019-10-13 23:11:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:23,822 INFO L462 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2019-10-13 23:11:23,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:11:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2019-10-13 23:11:23,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:11:23,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:23,826 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:23,826 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash -183241630, now seen corresponding path program 1 times [2019-10-13 23:11:23,827 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:23,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4568490] [2019-10-13 23:11:23,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:23,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:23,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:11:24,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4568490] [2019-10-13 23:11:24,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:24,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:11:24,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632962091] [2019-10-13 23:11:24,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:11:24,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:11:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:11:24,125 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 12 states. [2019-10-13 23:11:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:26,473 INFO L93 Difference]: Finished difference Result 1521 states and 1768 transitions. [2019-10-13 23:11:26,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:11:26,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-10-13 23:11:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:26,481 INFO L225 Difference]: With dead ends: 1521 [2019-10-13 23:11:26,481 INFO L226 Difference]: Without dead ends: 1116 [2019-10-13 23:11:26,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:11:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2019-10-13 23:11:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1046. [2019-10-13 23:11:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-13 23:11:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1224 transitions. [2019-10-13 23:11:26,562 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1224 transitions. Word has length 149 [2019-10-13 23:11:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:26,563 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1224 transitions. [2019-10-13 23:11:26,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:11:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1224 transitions. [2019-10-13 23:11:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 23:11:26,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:26,569 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:26,570 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash -52833044, now seen corresponding path program 1 times [2019-10-13 23:11:26,570 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:26,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431982536] [2019-10-13 23:11:26,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:26,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:26,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:26,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431982536] [2019-10-13 23:11:26,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:26,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:26,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130007702] [2019-10-13 23:11:26,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:26,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:26,739 INFO L87 Difference]: Start difference. First operand 1046 states and 1224 transitions. Second operand 3 states. [2019-10-13 23:11:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:26,798 INFO L93 Difference]: Finished difference Result 2146 states and 2581 transitions. [2019-10-13 23:11:26,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:26,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 23:11:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:26,806 INFO L225 Difference]: With dead ends: 2146 [2019-10-13 23:11:26,806 INFO L226 Difference]: Without dead ends: 1158 [2019-10-13 23:11:26,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2019-10-13 23:11:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1156. [2019-10-13 23:11:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2019-10-13 23:11:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1415 transitions. [2019-10-13 23:11:26,890 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1415 transitions. Word has length 171 [2019-10-13 23:11:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:26,890 INFO L462 AbstractCegarLoop]: Abstraction has 1156 states and 1415 transitions. [2019-10-13 23:11:26,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1415 transitions. [2019-10-13 23:11:26,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:11:26,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:26,898 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:26,899 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:26,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2008380414, now seen corresponding path program 1 times [2019-10-13 23:11:26,900 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:26,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476658260] [2019-10-13 23:11:26,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:26,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:26,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:11:27,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476658260] [2019-10-13 23:11:27,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:27,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:27,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296482459] [2019-10-13 23:11:27,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:27,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:27,092 INFO L87 Difference]: Start difference. First operand 1156 states and 1415 transitions. Second operand 3 states. [2019-10-13 23:11:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:27,167 INFO L93 Difference]: Finished difference Result 2461 states and 3130 transitions. [2019-10-13 23:11:27,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:27,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 23:11:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:27,176 INFO L225 Difference]: With dead ends: 2461 [2019-10-13 23:11:27,177 INFO L226 Difference]: Without dead ends: 1363 [2019-10-13 23:11:27,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:27,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-10-13 23:11:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1361. [2019-10-13 23:11:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2019-10-13 23:11:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1770 transitions. [2019-10-13 23:11:27,331 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1770 transitions. Word has length 177 [2019-10-13 23:11:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:27,334 INFO L462 AbstractCegarLoop]: Abstraction has 1361 states and 1770 transitions. [2019-10-13 23:11:27,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1770 transitions. [2019-10-13 23:11:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:11:27,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:27,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:27,342 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash -385167538, now seen corresponding path program 1 times [2019-10-13 23:11:27,343 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:27,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677103398] [2019-10-13 23:11:27,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:27,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:27,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:27,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677103398] [2019-10-13 23:11:27,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:27,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:11:27,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779521652] [2019-10-13 23:11:27,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:11:27,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:27,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:11:27,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:11:27,834 INFO L87 Difference]: Start difference. First operand 1361 states and 1770 transitions. Second operand 12 states. [2019-10-13 23:11:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:32,635 INFO L93 Difference]: Finished difference Result 3094 states and 4152 transitions. [2019-10-13 23:11:32,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 23:11:32,637 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 173 [2019-10-13 23:11:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:32,656 INFO L225 Difference]: With dead ends: 3094 [2019-10-13 23:11:32,656 INFO L226 Difference]: Without dead ends: 2237 [2019-10-13 23:11:32,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2019-10-13 23:11:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2019-10-13 23:11:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 1755. [2019-10-13 23:11:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2019-10-13 23:11:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2463 transitions. [2019-10-13 23:11:32,819 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2463 transitions. Word has length 173 [2019-10-13 23:11:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:32,819 INFO L462 AbstractCegarLoop]: Abstraction has 1755 states and 2463 transitions. [2019-10-13 23:11:32,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:11:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2463 transitions. [2019-10-13 23:11:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:11:32,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:32,829 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:32,829 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -25078191, now seen corresponding path program 1 times [2019-10-13 23:11:32,830 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:32,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145425776] [2019-10-13 23:11:32,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:32,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:32,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:11:33,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145425776] [2019-10-13 23:11:33,047 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:33,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:33,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856469888] [2019-10-13 23:11:33,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:33,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:33,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:33,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:33,049 INFO L87 Difference]: Start difference. First operand 1755 states and 2463 transitions. Second operand 3 states. [2019-10-13 23:11:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:33,168 INFO L93 Difference]: Finished difference Result 3733 states and 5382 transitions. [2019-10-13 23:11:33,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:33,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-13 23:11:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:33,192 INFO L225 Difference]: With dead ends: 3733 [2019-10-13 23:11:33,192 INFO L226 Difference]: Without dead ends: 2040 [2019-10-13 23:11:33,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2019-10-13 23:11:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2039. [2019-10-13 23:11:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2019-10-13 23:11:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2963 transitions. [2019-10-13 23:11:33,412 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2963 transitions. Word has length 179 [2019-10-13 23:11:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:33,416 INFO L462 AbstractCegarLoop]: Abstraction has 2039 states and 2963 transitions. [2019-10-13 23:11:33,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2963 transitions. [2019-10-13 23:11:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 23:11:33,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:33,432 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:33,433 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash 130376167, now seen corresponding path program 1 times [2019-10-13 23:11:33,434 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:33,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824612331] [2019-10-13 23:11:33,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:33,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:33,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:33,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824612331] [2019-10-13 23:11:33,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:33,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:11:33,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217069231] [2019-10-13 23:11:33,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:11:33,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:33,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:11:33,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:11:33,796 INFO L87 Difference]: Start difference. First operand 2039 states and 2963 transitions. Second operand 12 states. [2019-10-13 23:11:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:39,241 INFO L93 Difference]: Finished difference Result 3899 states and 5562 transitions. [2019-10-13 23:11:39,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 23:11:39,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2019-10-13 23:11:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:39,256 INFO L225 Difference]: With dead ends: 3899 [2019-10-13 23:11:39,257 INFO L226 Difference]: Without dead ends: 2368 [2019-10-13 23:11:39,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2019-10-13 23:11:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states.